I strongly recommend storing your shell history in a database, but if you're more of a minimalist, you might want to look at zsh-histdb[0]. It only support zsh, and doesn't have cloud syncing, but its also written entirely in shell script, doesn't have "accounts" or rely on sponsors, and it is far simpler. I have been using it for years and it has been absolute bliss. Whenever I run a command, it is immediately available in the history for all of my shells, and I no longer have commands disappear from my history unexpectedly.

[0] https://github.com/larkery/zsh-histdb